Move property tree debugging code to platform/graphics/paint/ (try #2)

third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EffectPaintPropertyNode_h
 #define EffectPaintPropertyNode_h
 
 #include "cc/layers/layer.h"
 #include "platform/PlatformExport.h"
 #include "platform/graphics/CompositorElementId.h"
@@ skipping 85 matching lines @@
   // because SkImageFilter doesn't have an equality operator.
   bool operator==(const EffectPaintPropertyNode& o) const {
     return m_parent == o.m_parent &&
            m_localTransformSpace == o.m_localTransformSpace &&
            m_outputClip == o.m_outputClip &&
            m_filter.equalsIgnoringReferenceFilters(o.m_filter) &&
            m_opacity == o.m_opacity && m_blendMode == o.m_blendMode &&
            m_directCompositingReasons == o.m_directCompositingReasons &&
            m_compositorElementId == o.m_compositorElementId;
   }
+
+  String toTreeString() const;
 #endif
 
   String toString() const;
 
   bool hasDirectCompositingReasons() const {
     return m_directCompositingReasons != CompositingReasonNone;
   }
 
   const CompositorElementId& compositorElementId() const {
     return m_compositorElementId;
@@ skipping 48 matching lines @@
   CompositorElementId m_compositorElementId;
 };
 
 // Redeclared here to avoid ODR issues.
 // See platform/testing/PaintPrinters.h.
 void PrintTo(const EffectPaintPropertyNode&, std::ostream*);
 
 }  // namespace blink
 
 #endif  // EffectPaintPropertyNode_h